Authors

M. A. Khan;M. N. Leuenberger

Comments

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Abbreviated Journal Title

Phys. Rev. B

Keywords

QUANTUM INTERFERENCE; SPIN STATES; GRAPHENE; ELECTRONS; PHOTONS; OPTICS; FLOW; Physics, Condensed Matter

Abstract

We propose a two-dimensional Hong-Ou-Mandel (HOM) type interference experiment for massless Dirac fermions in graphene and 3D topological insulators. Since massless Dirac fermions exhibit linear dispersion, similar to photons in vacuum, they can be used to obtain the HOM interference intensity pattern as a function of the delay time between two massless Dirac fermions. We show that while the Coulomb interaction leads to a significant change in the angle dependence of the tunneling of two identical massless Dirac fermions incident from opposite sides of a potential barrier, it does not affect the HOM interference pattern. We apply our formalism to develop a massless Dirac fermion beam splitter (BS) for controlling the transmission and reflection coefficients. We calculate the resulting time-resolved correlation function for two identical massless Dirac fermions scattering off the BS.

Journal Title

Physical Review B

Volume

90

Issue/Number

7

Publication Date

1-1-2014

Document Type

Article

Language

English

First Page

5

WOS Identifier

WOS:000341026900005

ISSN

1098-0121

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